Itai Y, Ohtomo K, Kokubo T, Makita K, Okada Y, Machida T, Yashiro N
J Comput Assist Tomogr. 1987 Mar-Apr;11(2):253-7. doi: 10.1097/00004728-198703000-00011.
The presence of fat in hepatic masses narrows the range of differential diagnoses down to hepatic angiomyolipoma, lipoma, adenoma, hepatoma, metastatic fatty tumors of the liver, focal fatty infiltration of the liver, and extrahepatic fatty masses such as intraperitoneal implants from malignant teratomas, and packed omentum. We report six hepatic tumors containing fat (lipoma, hepatocellular carcinoma, and calcified mass with fat-fluid level) with CT and magnetic resonance (MR) imaging. The distribution of fat was diffuse in the lipomas and some hepatocellular carcinomas and localized in other hepatocellular carcinomas and fat-fluid masses. The density ranged from - 100 to 0 HU. High intensity areas on both T1- and T2-weighted MR images corresponded to the hypodense areas on CT.
肝脏肿块中脂肪的存在将鉴别诊断范围缩小至肝脏血管平滑肌脂肪瘤、脂肪瘤、腺瘤、肝癌、肝脏转移性脂肪肿瘤、肝脏局灶性脂肪浸润以及肝外脂肪肿块，如恶性畸胎瘤的腹腔种植灶和包裹性大网膜。我们报告了6例含有脂肪的肝脏肿瘤（脂肪瘤、肝细胞癌以及伴有脂肪-液平面的钙化肿块）的CT和磁共振（MR）成像表现。脂肪在脂肪瘤和部分肝细胞癌中呈弥漫分布，而在其他肝细胞癌和脂肪-液性肿块中呈局灶分布。其密度范围为-100至0 HU。T1加权和T2加权MR图像上的高信号区与CT上的低密度区相对应。
